Unbroken

This is a great story, and you'll see that if you head on over and read it. With over 60,000 words, there are a lot of ways to navigate your way through this one. It's a true CYOA (as opposed to classic IF), but there are good, clear options for you to follow through the story. The story has a good deal of depth, so you won't be disappointed if you're looking for a story that you can get into.